WIRELESS_MICROPHONE

Published:2009/7/12 21:20:00 Author:May | From:SeekIC

Q1 amplifies the output from an electret microphone MIC1．Audio is fed into oscillator Q2，whichmodulates the signal．LIC1 is a tank circuit for operation in the 88－MHz reglon．The antenna is a 6-to 8-inch ptece of wire.L1 is a variable inductor in the 1-μH range．



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